All Things Mk5 > Performance Modifications

Drop in rods for the ED30 / S3 / Cupra

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Hurdy:
Sorry about taking the thread off topic Jonny :ashamed:

Janner_Sy:
back on topic,

from what i gather all you need to do to uprate the internals on the k04s seems to be the rods, as the pistons can handle the extra power.

what about the k03 engine.

ive squared away a k04 turbo now, so the conversion is on the cards, id also like to get water methanol, and i like the idea of the scrick cams. that could potentialy put my BWA engine above the 350hp mark if not even more.

if i was to uprate my internals would i only need the rods to reduce the likely hood of bending things or would the pistons or anything else need doing?

Hurdy:
The pistons are also different on the ED30/S3/Cupra.

They give a compression ratio of 9.8:1 instead of the GTI/FR/VRs 10.25:1 (I think it is 10.25, but it maybe 10.5!!)

This enables the engine to allow more timing without knock, the GTI engine would be more prone to knock/detonation at higher outputs, which is one of the main reasons for going with a lower comp ratio with a BT conversion :happy2:

Janner_Sy:
so water meth would allow that advance of timing then without the chance of knock.  hmmmm maybe i could just throw some ed30 pistons in?

jonnyc:

--- Quote from: vRSy on January 06, 2010, 10:51:47 pm ---back on topic,

from what i gather all you need to do to uprate the internals on the k04s seems to be the rods, as the pistons can handle the extra power.

what about the k03 engine.

ive squared away a k04 turbo now, so the conversion is on the cards, id also like to get water methanol, and i like the idea of the scrick cams. that could potentialy put my BWA engine above the 350hp mark if not even more.

if i was to uprate my internals would i only need the rods to reduce the likely hood of bending things or would the pistons or anything else need doing?

--- End quote ---

The USP Motorsports car made 605WHP on drop in rods and stock 200hp 2.0T FSI pistons, so I would say that there fine..

But of course you need to bare in mind what John has already pointed out too, you wont be able to run as much ignition advance due to the higher CR but you will spool slightly faster as a result also, so its a bit of a balance between the two..

I would say just drop in a set of rods and steer clear of water/meth etc.. Its only one more thing to worry about, thats how I see it anyways.. I think, pump fuel, fill it and go..  :smiley:

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